Home Battery Quotes: The Equipment, Work and Support to Put in Writing

A battery quote should tell you what will be installed, what it will do and who will help if it does not work as agreed. A brand name, storage size and final price cannot answer those questions alone.

Start with the job you want your home battery to perform. Evening bill savings, selected-circuit backup and a future EV charger create different requirements. Give every supplier the same brief.

Put the equipment on one page

Ask for the battery modules, inverter or controller, monitoring equipment and any backup gateway by model number. Record usable storage and continuous output separately. Leave a visible blank wherever a proposal is vague.

The Australian Government recommends itemised quotes showing equipment, site design, extra work, costs and the assumptions behind estimated savings.

Government quotation guidance.

A useful comparison sheet has an included column, an excluded column and a needs-confirmation column. Do not silently put a missing component into the included column because the salesperson discussed it.

Describe the work, not just the cabinet

Ask where the equipment will sit and which installation work is covered. Cable routes, switchboard work, access and changes to existing solar should appear in the accepted scope or in clearly stated conditions.

Consider two hypothetical proposals. Both name the same battery, but one retains the existing solar inverter while the other replaces it. They may also differ in backup equipment. Their headline prices are not yet comparable.

Our battery installation cost guide explains how to separate those inclusions. Request the price of the configuration you actually need before judging either proposal.

Check the people and the handover

Ask who sells the system, who installs it and who responds to a fault. A subcontracted installation can still have clear accountability. What matters is having names, responsibilities and a working contact pathway.

You can check an installer's accreditation through Solar Accreditation Australia's public register. Ask for the relevant accreditation details rather than relying on a logo in a brochure.

Check SAA accreditation.

For electrical work in Victoria, ask how the Certificate of Electrical Safety and any required independent inspection will be handled. Keep the completed certificate with your system records.

Energy Safe Victoria certification guidance.

The installer selection guide provides a broader set of questions about design, workmanship and aftercare. Accreditation is one check, not a substitute for a complete written scope.

Turn promises into acceptance checks

If backup is included, ask for the protected circuits and operating limits in writing. If monitoring is included, ask what you can see and who owns the account. If expansion is proposed, identify the currently supported pathway.

A hypothetical household might want the kitchen fridge, selected lights and its internet equipment supported. A written circuit list and installer-led demonstration address that request more clearly than a claim of energy independence.

Do not pay for every optional feature just to make competing quotes look identical. Remove a capability you do not need, or ask for it as a separately priced option. Compare the useful scope first.

Resolve uncertainty before the deposit

Check quote expiry, payment stages and how variations are approved. Keep equipment changes and revised prices in writing. A later substitution should trigger another review of compatibility, backup and warranty conditions.

Bring the full documents, your recent bills and your priority list to the final discussion. The next step is a clarified proposal, not a rushed choice between two totals that cover different work.